Study on mono column hull type drilling and early production system for offshore oil & gas development

Mono column hull type drilling and early production system that has excellent dynamic characteristic and capacity of oil is expected to be the next technology for offshore oil and gas development, especially, ultra deep water and arctic area development. Though it is very attractive concept for the designers, unfortunately, the system has some problems to be solved. In this paper, we have studied the some issues as follows; 1) vortex induced vibration analysis for the riser with strake device, 2) vortex induced motion analysis, 3) gas explosion analysis, 4) concept design for the mono column hull type drilling and early production system. This paper aims to introduce the results of the studies for the mono column hull type drilling and early production system. These works are joint study between National Maritime Research Institute and Japan Oil, Gas and Metals National Corporation (JOGMEC).